Jernej Mravlje Centre de Physique Théorique (CPHT) École Polytechnique 91128 Palaiseau Cedex France Tel.: +33 (0)1 6933 4212 Fax.: +33 (0)1 6933 4949 firstname.lastname@cpht.polytechnique.fr

Research Interests

My current research is aimed at many-body effects occuring in realistic materials. I find this field of solid-state physics especially challenging (and rewarding) because it is only the combination of concepts at various levels of abstraction (atomic picture, crystal lattice, ..., effective low energy field theory) that leads to understanding.
In the large dimensionality limit, the bulk correlated problem translates to a self-consistent quantum impurity problem (DMFT, dynamical mean field theory). This enables numerical analysis of correlated material via the combination of ab initio density functional methods (DFT) with DMFT. This method promises to bridge the gap between theorists and experimentalists, and thereby for strongly correlated materials accomplish what the DFT already has for weakly correlated materials. I am currently applying this method to explain the bad metal behavior in the ruthenates.
I am interested also in the correlated behavior on the meso(nano)-scale, as revealed in measurements of transport through nanostructures or by probing the magnetic ad-atoms on surfaces by a scanning tunneling microscope. I am particularly interested in the effects of the electron-phonon (EP) coupling, which are pronounced in experiments with molecular break junctions. I applied variational methods and the numerical renormalization group to explain the influence of the EP coupling there.

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Curriculum Vitae

• September 2009 - Present: Postdoctoral fellow at École Polytechnique, Palaiseau, France.

• May 2004 - September 2009: Research assistant at Josef Stefan Institute, Ljubljana, Slovenia. My homepage there.
• September 2004 - May 2009: Philosophiæ Doctor Degree in Physics at University of Ljubljana, Slovenia.
  Thesis: The influence of phonons on electron transport in nanoscopic systems.
  Supervisor: Prof. Anton Ramšak
• September 2006: Participation on the "XI Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Salerno, Italy.
• September 2007: Participation on the "XII Training Course in the Physics of Strongly Correlated Systems", Vietri sul Mare, Salerno, Italy.
• October 1999 - Sep 2004: Degree in Physics at the University of Ljubljana, Slovenia.
  

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Selected publications

1. "Kondo effect and channel mixing in oscillating molecules",
   J. Mravlje and A. Ramšak,
   Phys. Rev. B 78, 235416 (2008).
2. "Vibrational effects on low-temperature properties of molecular conductors (SCES'07)",
   J. Mravlje, A. Ramšak and R. Žitko,
   Physica B 403, 1484 (2008).
3. "Spin qubits in double quantum dots - entanglement versus the Kondo effect",
   A. Ramšak, J. Mravlje, R. Žitko, and J. Bonča,
   Phys. Rev. B 74, 241305 (2006).
4. "Conductance of a molecule with a center of mass motion",
   J. Mravlje, A. Ramšak, and T. Rejec,
   Phys. Rev. B 74, 205320 (2006).
5. "Kondo effect in double quantum dots with interdot repulsion",
   J. Mravlje, A. Ramšak, and T. Rejec,
   Phys. Rev. B 73, 241305(R) (2006).
6. "Conductance of deformable molecules with interaction",
   J. Mravlje, A. Ramšak, and T. Rejec, Phys. Rev. B 72, 121403(R) (2005).

Full list

• Preprints on cond-mat

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Last update 2.Sep.2009, Paris, France